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All Journal Jurnal Sains dan Teknologi AKSIOMA: Jurnal Program Studi Pendidikan Matematika JOIV : International Journal on Informatics Visualization ZERO : Jurnal Sains, Matematika dan Terapan BAREKENG: Jurnal Ilmu Matematika dan Terapan JURNAL PENELITIAN PENDIDIKAN MIPA Zero : Jurnal Sains, Matematika, dan Terapan JISTech (Journal of Islamic Science and Technology) JURNAL PENDIDIKAN TAMBUSAI Jurnal Cendekia : Jurnal Pendidikan Matematika Journal on Education MAJU : Jurnal Ilmiah Pendidikan Matematika JOURNAL OF SCIENCE AND SOCIAL RESEARCH JURNAL MATHEMATIC PAEDAGOGIC MAJAMATH: Jurnal Matematika dan Pendidikan Matematika SAP (Susunan Artikel Pendidikan) JCRS (Journal of Community Research and Service) AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Eduscience (JES) Indonesian Journal of Education and Mathematical Science G-Tech : Jurnal Teknologi Terapan Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Didactic Mathematics Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Jurnal Abdimas Kartika Wijayakusuma Indo-MathEdu Intellectuals Journal Journal of Mathematics and Scientific Computing With Applications Journal of Information Systems and Technology Research Jurnal MathEducation Nusantara Jurnal Ilmiah Ilmu Terapan Universitas Jambi International Journal of Educational Research Excellence (IJERE) Majalah Ilmiah METHODA Jurnal Penelitian Pendidikan MIPA Jurnal Pengabdian Masyarakat dan Riset Pendidikan SAMBARA: Jurnal Pengabdian Kepada Masyarakat Media Pendidikan Matematika Edumaspul: Jurnal Pendidikan
Dedy Juliandri Panjaitan
Universitas Muslim Nusantara Al-Washliyah
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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Penerapan Model Pembelajaran Kooperatif Tipe Teams Games Tournament (TGT) Untuk Meningkatkan Keaktifan Belajar Peserta Didik SMA Negeri 14 Medan Pesta Rut Cahaya Sitanggang; Saiful Bahri; Dedy Juliandri Panjaitan; Evi Julyana Nasution; Rennika Irfenti Seprina Simorangkir
Journal on Education Vol 6 No 4 (2024): Journal on Education: Volume 6 Nomor 4 Mei-Agustus 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i4.5935

Abstract

As the less from disciples of participate study that begin from problem that background for this research. The purpose of the act class is research what if apply cooperative model from type of Teamn Games Tournament (TGT) that could increase teh Interactive stude from disciples. This research that used descriptive kuantitative method with collecting result from observatio, kuesioner and documentary. The result from research show that score average for whole of indicator that take from disciples beside siklus 1 is 74,7 with passive criteria that 3 people, and the active criteria most active is 14 people. The persentage that reach from first siclus is 72,5 ℅. For applying from the second siclus, that reach from the disciples with the active of criteria that 13 people, and the most active that 21 people. Average score that reach for all disciples that 82,7%. For the active percentage study as the indicator is 87,9℅. From. The observation result and kuetioner that done, the learning with TGT Model for increase the stude active for this research, that reach increasing with amount of the active of disciples and most active for Siclus 1 for Siclus from 31 people become 34 people.
Penerapan Model Problem Based Learning Untuk Meningkatkan Kemampuan Berpikir Kritis Matematis Siswa Di SMA Negeri 2 Medan Yovita Ningtias; Hidayat Hidayat; Dedy Juliandri Panjaitan; Atika Erlina Nasution; Yuki Indayanti
Journal on Education Vol 6 No 4 (2024): Journal on Education: Volume 6 Nomor 4 Mei-Agustus 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i4.6351

Abstract

Mathematics is a discipline that focuses on developing thinking skills. Learning mathematics can hone critical thinking skills, which form the foundation for understanding mathematical concepts and effectively solving problems. This Classroom Action Research (PTK) study was conducted to improve students' critical mathematical thinking skills through a PBL approach. Medical School Negeri 2 Medan was the site of the research. A total of 36 students from the 2023/2024 academic year at SMA Negeri 2 Medan's class XI MIPA 9 served as the study subjects. There were two cycles to this research, and each one included the following steps: preparation, action, observation, and reflection. The data was analyzed using quantitative descriptive analysis, and the methods for data gathering included both tests and non-tests. The results showed that the PBL model has improved the critical mathematical thinking skills of students in class XI MIPA 9 at SMA Negeri 2 Medan. In the first cycle, students' critical mathematical thinking skills reached 75.52% with a high qualification, and in the second cycle, they increased to 87.27% with a very high qualification.
PEMODELAN MATEMATIKA TERHADAP KECANDUAN GAME ONLINE BERDASARKAN MODEL SEIRS PADA BERBAGAI KELOMPOK USIA DI INDONESIA Siregar, Annisa Fadhillah Putri; Firmansyah, Firmansyah; Panjaitan, Dedy Juliandri
Majalah Ilmiah METHODA Vol. 14 No. 1 (2024): Majalah Ilmiah METHODA
Publisher : Universitas Methodist Indonesia

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Abstract

The mathematical model can be used to analyze many real-life problems. One of them is the case of online game addiction, which is currently rampant in Indonesia. This research will analyze the SEIRS mathematical model in the case of online game addiction experienced by various age groups. The purpose of this research is to understand mathematical modeling based on the SEIRS model for cases of online game addiction in various age groups in Indonesia. The result of this research is the mathematical model, which is , S(0) = 17; E(0) = 25; , I(0) = 6; and , R(0) = 2.
Analisis Kecanduan Menonton YouTube pada Anak Balita Menggunakan Model SEIEdR Sukmana, Eko Akbar; Firmansyah, Firmansyah; Panjaitan, Dedy Juliandri
Majalah Ilmiah METHODA Vol. 14 No. 2 (2024): Majalah Ilmiah METHODA
Publisher : Universitas Methodist Indonesia

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Abstract

In contemporary society, YouTube addiction in children under five has become an increasingly troubling problem. The purpose of this study is to solve the addiction problem and provide solutions that can be applied in the workplace. A modified SEIEdR (Suspectible-Exposed-Infected-Education-Recovered) model for YouTube watching addiction behavior is used. Identifying assumptions and parameters, creating mathematical models, finding equilibrium points, calculating the basic reproduction number (R0), conducting model stability analysis, and performing simulations using Maple software are all methodological processes. The main findings show that if R0 < 1, the addictive behavior of watching YouTube will decrease over time and will become endemic. In addition, the individual rate values of active and novice viewers who are educated have a significant effect on reducing the population of novice and active YouTube viewers. These simulation results improve our understanding of the dynamics of YouTube viewing addiction and offer practical solutions to this problem.
ANALISIS MODEL MATEMATIKA SEIRS TERHADAP KECANDUAN GAME ONLINE SISWA SMPN 3 MANDREHE BARAT Waruwu, Nove Susanti; Panjaitan, Dedy Juliandri; Firmansyah, Firmansyah
Majalah Ilmiah METHODA Vol. 14 No. 1 (2024): Majalah Ilmiah METHODA
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research uses documentation and experimental methods. The documentation method is used to create and develop the SEIRS model in cases of online game addiction. Meanwhile, the experimental method is a research method to find answers or solutions to a case or research object. This research was conducted on students in class VIII UPTD SMP Negeri 3 Mandrehe Barat with a total of 26 students within 14 days. In this study, researchers modeled cases of online game addiction into the SEIRS model using the 5th-order Runge-Kutta method so that its effectiveness was obtained based on the data obtained. The results of this study show that the Runge Kutta method is the most effective in the Seirs mathematical model for online game addiction.
ANALISIS PEMBELAJARAN DARING MATEMATIKA MELALUI AKIBAT DAMPAK PANDEMI COVID-19 PADA SISWA KELAS X SMK SWASTA BRIGJEND KATAMSO T.P 2020/2021 Francisca, Onatri; Panjaitan, Dedy Juliandri
Jurnal MathEducation Nusantara Vol 7, No 1 (2024): January 2024
Publisher : Universitas Muslim Nusantara Al Washliyah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32696/jmn.v7i1.355

Abstract

Penelitian ini bertujuan untuk mengevaluasi efektivitas pembelajaran daring matematika di SMK Brigjend Katamso. Pendekatan yang digunakan adalah deskriptif kualitatif, yang berfokus pada analisis holistik dan kontekstual melalui pengumpulan data dari latar alami. Penelitian ini melibatkan 24 siswa kelas X sebagai subjek penelitian dan menggunakan 20 item pernyataan untuk mengukur persepsi mereka terhadap pembelajaran daring. Data dikumpulkan melalui angket, wawancara, observasi, dan dokumentasi, dan dianalisis menggunakan statistik deskriptif. Penelitian ini dilakukan di SMK Brigjend Katamso, Medan, selama bulan Mei hingga Juni 2021. Hasil penelitian menunjukkan bahwa pembelajaran daring matematika di SMK Brigjend Katamso termasuk dalam kategori cukup efektif. Secara rinci, 4 siswa (16,7%) mengkategorikan pembelajaran sebagai sangat efektif, 9 siswa (37,5%) menganggapnya efektif, dan 11 siswa (45,8%) menilai pembelajaran daring cukup efektif. Tidak ada siswa yang menilai pembelajaran daring sebagai kurang efektif atau tidak efektif. Temuan ini mengindikasikan bahwa mayoritas siswa merasa pembelajaran daring matematika di sekolah mereka berfungsi dengan baik, meskipun ada ruang untuk peningkatan lebih lanjut.
SITUASI DIDAKTIS DAN LEARNING OBSTACLE PADA PEMBELAJARAN TURUNAN FUNGSI ALJABAR KELAS XI DI SEKOLAH SMA SAINS TAHFIDZ QUR’AN AL-AMMAR Siregar, Aisyah; Zahari, Cut Latifah; Panjaitan, Dedy Juliandri
Jurnal MathEducation Nusantara Vol 7, No 1 (2024): January 2024
Publisher : Universitas Muslim Nusantara Al Washliyah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32696/jmn.v7i1.353

Abstract

Penelitian ini didasarkan oleh kesulitan siswa dalam menyelesaikan materi turunan fungsi aljabar. Penelitian ini didukung melalui wawancara dan analisis terhadap buku ajar yang digunakan guru; RPP guru serta soal tes yang diberikan kepada siswa; penyebab kesulitan tersebut terjadi karena siswa belum sepenuhnya memahami konsep turunan fungsi aljabar dan terdapat kesalahan pada pemanfaatan konsep image siswa. Oleh karena itu, tujuan penelitian ini adalah merancang pembelajaran pada materi turunan fungsi aljabar agar siswa kelas XI SMA Sanis Tahfidz Quran Al-Ammar mampu mengatasi hambatan belajar. Penelitian ini menggunakan pendekatan kualitatif dengan metode Didactical Design Research (DDR) yang meliputi tiga tahapan yaitu analisis situasi didaktis, metapedadidaktis, hypothetical learning trajectory, serta analisis learning obstacle. Berdasarkan hasil analisis, ditemukan bahwa learning obstacle pada siswa yaitu siswa kesulitan memahami pengertian turunan fungsi aljabar, tidak dapat menganalisis permasalahan yang berkaitan dengan turunan fungsi aljabar, tidak dapat menerapkan konsep turunan fungsi aljabar, dan tidak dapat menyelesaikan masalah kontekstual yang berkaitan dengan turunan fungsi aljabar. Berdasarkan temuan tersebut, maka disusunlah Hypothetical Learning Trajectory (HLT) yang kemudian dirancang desain didaktis pada materi turunan fungsi aljabar. Pada tahap didaktik metapedagogis, peneliti mengimplementasikan desain didaktik yang dirancang dan melakukan identifikasi permasalahan akhir bersama siswa. Analysis learning obstacle merupakan tahapan akhir dari proses penelitian agar dapat disimpulkan bahwa dengan menerapkan desain didaktis dapat meminimalisir atau mengatasi kesulitan yang terjadi pada siswa dalam batas material turunan fungsi aljabar. Selain itu, desain didaktik mampu menjadikan siswa lebih aktif dan bersemangat saat belajar.
OPTIMIZATION OF PRODUCTION COSTS WITH SIMPLEX METHOD Firmansyah, Firmansyah; Panjaitan, Dedy Juliandri; Salayan, Madyunus; Silalahi, Alistraja Dison
Journal of Community Research and Service Vol 4, No 2: July 2020
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jcrs.v4i2.15277

Abstract

One of the problems in the company is my resource limitation, the time of production and the tools used in the production process. Companies in making decisions in production planning in the presence of these limitations, should seek to maximize the profit generated. However, in the production process a production planning reference is required to maximize the results obtained and minimize the production costs used. To solve the problem, needed a problem solving tool that is linear program using simplex method. Simplex method is one of the methods of linear program in solving the problem of more than two variables that can be applied into everyday life and can be used in production process planning. With one of the ultimate goal is the achievement of the optimum value with the constraints of limited resources. The results of the simplex method have decreased costs incurred less than the usual costs incurred every month and the results obtained using the simplex method can be used as a reference in making decisions to get optimal results on production costs in the company.
ANALISIS PENENTUAN STRATEGI PEMASARAN PRODUK SMARTPHONE MENGGUNAKAN FUZZY GAME THEORY Sekar Ayu Irawan; Fibri Rakhmawati; Dedy Juliandri Panjaitan
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol 7, No 3 (2024): August 2024
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v7i3.2152

Abstract

Banyaknya bermunculan produk-produk smartphone terbaru, mengakibatkan persaingan semakin meningkat. Oleh karena itu, perusahan-perusahaan smartphone diharapkan mampu memperkirakan strategi pemasaran apa saja yang terdapat pada kompetitornya serta mampu menganalisis atribut apa saja yang sesuai dengan kebutuhan konsumen. Untuk mendapatkan strategi pemasaran yang tepat yaitu dengan menerapkan metode fuzzy game theory, tujuan dari penelitian ini adalah untuk mendapatkan atribut apa yang diutamakan konsumen agar mendapatkan strategi pemasaran yang optimal dari dua perusahaan smartphone Samsung dan Oppo yang diteliti menggunakan fuzzy game theory dengan mengandalkan atribut-atribut yang diutamakan konsumen. Adapun strategi pemasaran optimalnya adalah strategi harga dan tipe dengan nilai 0,037, smartphone Samsung menggunakan atribut harga untuk memaksimumkan keuntungan, sedangkan smartphone Oppo menggunakan atribut tipe untuk meminimumkan kerugiannya.
PENERAPAN METODE STEPPING STONE DAN VRP (VEHICLE ROUTING PROBLEM) UNTUK TRANSPORTASI PENGIRIMAN HASIL PRODUKSI KELAPA SAWIT Indah Widya Hanzani; Rima Aprilia; Dedy Juliandri Panjaitan
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol 6, No 3 (2023): October 2023
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v6i3.1485

Abstract

Abstract: Transportation problems are problems that often occur in various countries in the world, especially in Indonesia. Traffic jams, infrastructure deficiencies, and distribution problems can result in substantial losses if not handled properly. PT Inecda is a company operating in the oil palm plantation sector. In the process of distributing production results, of course you need to pay attention because it will greatly influence the overall cost efficiency of the project. Increasing project costs are often caused by suboptimal distribution processes. The method used to solve distribution optimization problems is the Northwest Corner Method (NWC) to determine the initial solution and optimal testing using the Stepping Stone Method. And also the Vehicle Routing Problem (VRP) in the form of a mathematical model for routing problems. From the calculation results, the Stepping Stone method with the Northwest Corner Method (NWC) succeeded in providing optimal results and was able to minimize costs of Rp. 7,127,761.71.Keywords: transportatio; northwest corner method (NWC); stepping stone method;vehicle routing problem; crude palm Oil (CPO) Abstrak: Masalah transportasi adalah permasalahan yang seringkali terjadi di berbagai negara di dunia, khususnya di Indonesia. Kemacetan lalu lintas, kekurangan infrastruktur, dan masalah distribusi yang bisa mengakibatkan kerugian yang cukup besar jika tidak ditangani dengan benar. PT Inecda adalah perusahaan yang bergerak di bidang perkebunan kelapa sawit. Dalam proses pendistribusian hasil produksi, tentunya perlu diperhatikan karena akan sangat berpengaruh terhadap efisiensi biaya proyek secara keseluruhan. Meningkatnya biaya proyek seringkali diakibatkan oleh proses pendistribusian yang tidak optimal. Metode yang digunakan untuk menyelesaikan masalah pengoptimalan distribusi adalah Northwest Corner Method (NWC) untuk menentukan solusi awal dan uji optimal menggunakan metode Stepping Stone Method. Dan juga Vehicle Routing Problem (VRP) dalam bentuk model matematis untuk masalah perutean. Dari hasil perhitungan, metode Stepping Stone dengan Northwest Corner Method (NWC) berhasil memberi hasil optimal dan dapat meminimumkan biaya sebesar Rp. 7.127.761,71.Kata kunci: transportasi; northwest corner method (NWC); stepping stone method; vehicle routing problem; crude palm oil (CPO).
Co-Authors Adinda Kinanti Alistraja Dison Silalahi Andy Sapta Anjeli, Sarifah Anjelia Tarigan Annisa Fadhillah Putri Siregar Aprilia, Rima Atika Erlina Nasution Azmi Arief Sinaga Bahri, Saiful Batu, Siti Sadar Sulastri Lumban Br Tarigan, Dinda Renita Carissa Ghaniya Azzahra Carissa Ghaniya Azzahra Dahlia Dahlia Dahlia Dahlia Darmiati Darmiati Della Arsita sari Desi Syahfitri Dewi Fitria Dewi Nur Hasanah Ellysa Syahfitri Elsadday Br Manalu Elvi Syahara Lubis Evi Julyana Nasution Fayed, Heba A. Firmansyah Firmansyah Firmansyah Firmansyah Firmansyah Firmansyah Francisca, Onatri Gultom, Anastasya L. Hari Munandar Haryati Ahda Nasution Hasanah Hasanah Hasibuan, Nurleli Hema Pebria Rollingka Hidayat Hidayat Hilza Karyawati Indriani Husna, Wilia Indah Widya Hanzani Ismail Husein, Ismail Kartolo, Rahmad Kristina Intan Parulian Panjaitan Kusyani, Diah Liza, Tasya Dwi Lubis, Lailan Syafira Putri Madyunus Salayan Madyunus Salayan, Madyunus Mahyuni Br Damanik Marisa, - Mega Putri yani Muhammad Iqbal Fahri Muhammad Iqbal Fahri Muhammad Ridwan Muhammad Ridwan Naibaho, Mesni Harianty Nasution, Amanda Syahri Neni Triana, Neni Nisa Khairani Nurdalilah Nurdalilah Nurdalilah Nurdalilah Nurdiono Nurdiono Nurhafni Siregar Nurhalizah, Siti Nuriman Astuti Batubara Nurlela Nurlela Nurmairina Pesta Rut Cahaya Sitanggang Putri, Annisa Fadhillah Rakhmawati, Fibri Ramadhani Ramadhani Rangkuti, Sakdiah Aini Rennika Irfenti Seprina Simorangkir Resti Yolanda Rima Aprilia Rima Aprilia Rina Filia Sari Rina Filia Sari, Rina Filia Rina Widyasari Rina Widyasari Risnawati, Erna Rita Destini Rizki Rahmadani Rizki Rahmadani Siregar Sagala, Pehulysa Saiful Bahri Sapta, Andy Saragih, Agung Evansiyus Saragih, Jenri Hamonangan Sari, Dwi Novita Sekar Ayu Irawan Silalahi, Alistraja Dison Simbolon, Nurarfah H Sipahutar, Tuti Sumyati Siregar, Aisyah Siregar, Annisa Fadhillah Putri Siti Aisyah Sri Ulfa Rahayu Sudirman Sudirman Sukmana, Eko Akbar Syahara Lubis, Elvi Syahfitri, Lely Tarigan, Anjelia Taripar R Sihaloho Uliya Khoirun Nisa Waruwu, Nove Susanti Yessy Novalia Yovita Ningtias Yuki Indayanti Yuniar, Nana Yusnita, Nora Zahari, Cut Latifah Zebua, Mesra Belinda